Testing Bearings; Testing Belts And Sheaves; Checking Hydronic Radiant Heat Applications - Egatronic 51261 Manual De Instrucciones

TESTING BEARINGS

Warning!
Note:
It works best to compare two similar motors operating similar loads.
1. Press SET and then press
2. Press MODE to select MAX.
3. Enable motor and allow it to reach steady state operating temperatures.
4. Disable the motor if possible.
5. Measure the two motor bearing temperatures Compare the two motor bearing temperatures.
6. Unequal temperatures or a high temperature can indicate a lubrication or other bearing problem
that is resulting from excess friction.
7. Repeat the sequence for the blower bearings.

TESTING BELTS AND SHEAVES

1. Press SET and then press
2. Press MODE to select MAX.
3. Enable the motor and allow it to reach a steady state operating temperatures.
4. Aim the Thermometer at the surface to be measured.
5. Start recording temperature.
6. Slowly move the Thermometer up the belt toward second sheave.
- If belt is slipping, sheave temperature will be high from friction.
- If belt is slipping, belt temperature will remain high between sheaves.
- If belt is not slipping, belt temperature will reduce between sheaves.
- If inner surfaces of sheaves are not a true "V" shape, this indicates belt slippage and will
continue to operate at elevated temperatures until sheave is replaced.
- Sheaves must be properly aligned (include "pitch & yaw") for belt and sheaves to operate at
appropriate temperatures. A straight edge or taut string, can be used to check alignments.
- Motor sheave should operate at a temperature consistent with blower sheaves.
- If motor sheave is at a higher temperature at motor shaft than at outer circumference, belt is
probably not slipping.
- If outer circumference of sheave is at higher temperature than sheave at motor shaft, then belt is
probably slipping and sheaves may be misaligned.

CHECKING HYDRONIC RADIANT HEAT APPLICATIONS

Radiant heat tubes in the floor will normally run parallel to the outside walls. Starting at the
floor wall juncture, scan parallel to the wall while moving into the room away from the wall.
Parallel to the outside wall you should find parallel isothermal rows indicating the location of
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To avoid injury when testing bearings:
- Do not wear loose clothing, jewelry, or anything around neck when working
around moving parts such as motors, belts, blower, and fans.
- Make sure an electrical disconnect is within reach and operating correctly
and freely.
- Do not work alone.
/ to select relatively high emissivity.
/ to select relatively high emissivity.